摘要
濮城油田南区沙二上 4- 7砂层组属低渗透储层。根据岩石薄片 ,铸体薄片 ,图像分析和扫描电镜资料 ,储层成岩作用较强 ,见压实 ,胶结和溶解作用。该储层孔隙类型以原生残余粒间孔 ,次生粒间孔隙、裂隙和混合孔隙为特征。以压汞实验参数与渗透率的相关关系为基础 ,将实验参数 ,渗透率和孔隙度进行Q型聚类分析 ,结合实验曲线和镜下储层孔隙特征 ,该储层可分为次生孔隙 -中低渗 -大孔细喉型储层 ;混合孔隙 -低渗 -中孔细喉型储层 ;混合孔隙 -特低渗 -小孔细喉型储层 ;原生孔隙 -特低渗 -极低孔微细喉型储层。其中以第二和第三两种储层类型为主。
the reservoir in the southern area of Pucheng oil-field,consisted of No.4-No.7 sands of Sha 2 Member,is characterised for it's low Permeability. With the aid of observation of core slice, cast thin sections as well as the analysis of images, scanning electron microscpore, it is believed that the diagenesis Process in study area is fairly strong, and it is frequently to see compaction cementation and dissolution evidence. The Pore types include residual interparticle Pores, corrosion Pores, fractures and some mixed Pores. Bases on the correlation between centrifuge capillary Pressure data and Permeability value, the Q-model gathering analysis method are used among the three kinds of data including mercury Penetration, Permeability and Porosity, combined with the relationship between curves from the experiments and the Pore characteristics in the microscope, the reservoir in the study area can be divided into 4 different sorts. Among which, mixed-extremely low Permeability-thin Pore and thin throat reservoir and mixed-low Permeability-middle Pore and thin throat reservoir occupy the mainly Position in the study area.
出处
《内蒙古石油化工》
CAS
2004年第5期102-105,共4页
Inner Mongolia Petrochemical Industry
基金
中国石油化工股份有限公司"十条龙"项目的部分成果 (编号 :wx2 0 0 3 -4 4)
